311301318908809 has 2 divisors, whose sum is σ = 311301318908810. Its totient is φ = 311301318908808.

The previous prime is 311301318908771. The next prime is 311301318908813. The reversal of 311301318908809 is 908809813103113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254517257238409 + 56784061670400 = 15953597^2 + 7535520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311301318908809 is a prime.

It is a super-2 number, since 2×311301318908809² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 311301318908809.

It is not a weakly prime, because it can be changed into another prime (311301318908009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155650659454404 + 155650659454405.

It is an arithmetic number, because the mean of its divisors is an integer number (155650659454405).

Almost surely, 2^{311301318908809} is an apocalyptic number.

It is an amenable number.

311301318908809 is a deficient number, since it is larger than the sum of its proper divisors (1).

311301318908809 is an equidigital number, since it uses as much as digits as its factorization.

311301318908809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 55.

The spelling of 311301318908809 in words is "three hundred eleven trillion, three hundred one billion, three hundred eighteen million, nine hundred eight thousand, eight hundred nine".